Anthropic wants you to know Claude leads a quarter of its research, but "lead" doesn't mean what you think

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What happened
For the first time, Anthropic is releasing metrics on how it builds its own AI. Claude already "leads" 26 percent of the work on future models, up from under one percent in February. But the underlying scale is fuzzy, the scoring comes from Claude itself, and "lead" means less than it sounds.
Summary assembled by rule from the sources below